Optical coherence tomography angiography assessment of macular and peripapillary microvasculature in Parkinson's disease
Küçük Resim Yok
Tarih
2026
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Bmc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Background Parkinson's disease (PD) involves retinal dopaminergic dysfunction and is accompanied by various visual abnormalities. Optical coherence tomography angiography (OCTA) is a noninvasive imaging modality used to evaluate retinal microvascular structures.This study aimed to assess macular and peripapillary microvascular characteristics in patients with PD. Methods This prospective cross-sectional study included 62 patients with clinically confirmed PD with different disease severities and 62 age-matched healthy controls. OCTA imaging was performed using the AngioVue RTVue XR Avanti system.Vessel density (VD) was measured in the superficial capillary plexus (SCP), deep capillary plexus (DCP), and peripapillary capillary plexus. Foveal avascular zone (FAZ) area and perimeter were quantified. Disease severity was assessed using the Hoehn and Yahr scale. Associations between OCTA parameters and disease severity were also analyzed. Results The VD values measured from both the SCP and DCP were lower in patients with PD than in healthy controls (SCP,p= 0.035; DCP,p<0.001). Furthermore, peripapillaryVD was lower, and FAZ area was larger in the PD group (p = 0.002 and p = 0.026, respectively). Disease stage had moderate negative correlations with VDs in the SCP and DCP and a positive correlation with FAZ area (p < 0.05 for all). Conclusions Reduced macular and peripapillaryVDs together with FAZ enlargement were observed in PD. The moderate correlations of these OCTA findings with disease severity suggests that rather than directly indicating disease progression, OCTA may provide complementary information on retinal neurovascular involvement when interpreted alongside clinical assessment.
Açıklama
Anahtar Kelimeler
[Keyword Not Available]
Kaynak
Bmc Ophthalmology
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
26
Sayı
1
